Costco's extended hours for executive members will go into effect across all stores following the Labor Day weekend.

The retail warehouse giant told members in a June 11 email that its locations will open at 9 a.m. exclusively for its upper-level members, one hour earlier than for other members.

Business outlet TheStreet reported that stores had been given a grace period to implement the change that ends Aug. 31. USA TODAY reached out to Costco Aug. 31 to confirm the end of the grace period and did not receive an immediate response.

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